Which food has less impact on blood sugar?

SUGAR, HERSHEY'S SPECIAL DARK SYRUP (HIGH FRUCTOSE CORN SYRUP, CORN SYRUP, WATER, COCOA PROCESSED WITH ALKALI, SUGAR, SALT, MONO- AND DIGLYCERIDES, XANTHAN GUM, POLYSORBATE 60, ARTIFICIAL FLAVOR), VEGETABLE SHORTENING (PALM OIL, MONO- AND DIGLYCERIDES, POLYSORBATE 60), BLEACHED ENRICHED WHEAT FLOUR (FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), EGGS, MARGARINE (PALM OIL, WATER, SOYBEAN OIL, SALT, MONO- AND DIGLYCERIDES, ARTIFICIAL FLAVOR, ANNATTO EXTRACT, PRESERVATIVE [CALCIUM DISODIUM EDTA], VITAMIN A PALMITATE), INVERT SUGAR, COCOA PROCESSED WITH ALKALI, CULTURED BUTTERMILK (CULTURED MILK, SKIM MILK, MODIFIED CORNSTARCH, SODIUM CITRATE, LOCUST BEAN GUM, CARRAGEENAN, MONO- AND DIGLYCERIDES, SALT, VITAMIN A PALMITATE, VITAMIN D3), SEMISWEET CHOCOLATE (SUGAR, CHOCOLATE LIQUOR, COCOA BUTTER, MILKFAT, SOY LECITHIN, NATURAL FLAVOR, SALT), CONTAINS LESS THAN 2% OF THE FOLLOWING: HEAVY CREAM (CREAM, MILK, SKIM MILK, CARRAGEENAN, CELLULOSE GUM, MONOGLYCERIDES, POLYSORBATE 80, SALT, GUAR GUM), PALM AND PALM KERNEL OILS, LEAVENING (SODIUM ACID PYROPHOSPHATE, BAKING SODA, MONOCALCIUM PHOSPHATE), MODIFIED CORN STARCH, NATURAL AND ARTIFICIAL FLAVOR, MILK, SKIM MILK, SOY LECITHIN, NATURAL FLAVOR, SALT, CORN SYRUP, SOYBEAN OIL, HIGH FRUCTOSE CORN SYRUP, PRESERVATIVES (POTASSIUM SORBATE, PROPYLENE GLYCOL), CITRIC ACID.